Jumper Wire Female to Female 10cm 20cm 30cm is handy for making wire harnesses or jumpers between headers on PCBs. These premium jumper wires are a little over 6″ (150 mm) long and come in a ‘strip’ of 40 (4 pieces of each of ten colors). They have 0.1″ sockets on either end and fit cleanly next to each other on standard-pitch 0.1″ (2.54 mm) header. We recently updated these so they are in a ‘ribbon strip’ instead of individual wires. You can always pull the ribbon wires off to make individual jumpers or keep them together to make neatly organized wire harnesses.